139321459 has 2 divisors, whose sum is σ = 139321460. Its totient is φ = 139321458.

The previous prime is 139321451. The next prime is 139321463. The reversal of 139321459 is 954123931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139321459 - 2³ = 139321451 is a prime.

It is not a weakly prime, because it can be changed into another prime (139321451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69660729 + 69660730.

It is an arithmetic number, because the mean of its divisors is an integer number (69660730).

Almost surely, 2^139321459 is an apocalyptic number.

139321459 is a deficient number, since it is larger than the sum of its proper divisors (1).

139321459 is an equidigital number, since it uses as much as digits as its factorization.

139321459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 37.

The square root of 139321459 is about 11803.4511478635. The cubic root of 139321459 is about 518.4091654945.

The spelling of 139321459 in words is "one hundred thirty-nine million, three hundred twenty-one thousand, four hundred fifty-nine".